UL Precoder Control for Full-Power Transmission Beyond Four Antenna Ports
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current technologies have not adequately addressed the method of controlling full power transmission using more than four antenna ports in uplink (UL) communication, particularly in cases where a non-coherent or partial coherent precoder is indicated by DCI for codebook transmission, which can limit communication throughput.
Innovation Solution
A terminal and base station system that determines a precoder based on a codebook for transmission using more than four antenna ports, enabling uplink full power transmission through a control section and transmitting section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If codebook transmission with more than four antenna ports is implemented, then spectral efficiency is improved, but full power transmission control is not established
Solution Approach 1:
The patent changes the parameter of codebook subset configuration to enable full power transmission. By configuring the codebook subset to include non-coherent or partial coherent precoders for transmission using more than four antenna ports, the system achieves both high spectral efficiency and reliable full power transmission control.
2Adaptability or versatility
If non-coherent or partial coherent precoder is indicated by DCI, then transmission flexibility is improved, but full power transmission capability is not ensured
Solution Approach 1:
The patent applies preliminary action by pre-configuring the codebook subset to include non-coherent or partial coherent precoders before transmission occurs. This preliminary configuration ensures that when DCI indicates such precoders, the terminal already has the necessary full power transmission capability established, eliminating the need for additional power control adjustments during transmission.
3Productivity
If more than four antenna ports are used for UL transmission, then communication throughput is improved, but power control method is not defined
Solution Approach 1:
The patent implements self-service by enabling the terminal to automatically determine and apply full power transmission when configured with non-coherent or partial coherent codebook subsets for more than four antenna ports. The terminal autonomously manages power control without requiring additional base station commands, simplifying the overall power control methodology while maintaining high communication throughput.
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes a control section that determines a precoder, based on a codebook for transmission using more than four antenna ports, when a codebook subset indicating “non coherent” or “partial coherent” is configured, and a transmitting section that performs uplink full power transmission, based on the precoder. According to one aspect of the present disclosure, UL full power transmission using more than four antenna ports can be appropriately controlled.